Notley says denying the fact that resource-based industries are part of Canada's economy "weakens all parts of the country.''

TransCanada has said pipelines are safer and more environmentally friendly than rail for transporting oil, and Notley also echoed those comments today.

The proposed pipeline would take Alberta crude as far east as an Irving Oil refinery in Saint John, N.B., and would be capable of carrying up to 1.1 million barrels a day from the West to the East.

Wynne says that many of Ontario's conditions for supporting the pipeline — including working with communities and aboriginal groups and making sure climate change is taken into account — are "starting to be addressed.''